Neural Conduction, Action Potential, and Synaptic Transmission

Подписаться 3,3 млн

Просмотров 373 тыс.

50% 1

We have probably heard that neurons are the cells that transmit information around the body. But how does this work? Is it actual electricity? Like from the wall socket? What is a synapse? What happens there, in between one neuron and the next? This is a really big and really important topic, so let's dive in.
Watch the whole Biopsychology playlist: bit.ly/ProfDave...
General Chemistry Tutorials: bit.ly/ProfDave...
Organic Chemistry Tutorials: bit.ly/ProfDave...
Biochemistry Tutorials: bit.ly/ProfDave...
Biology/Genetics Tutorials: bit.ly/ProfDaveBio
Anatomy & Physiology Tutorials: bit.ly/ProfDave...
Microbiology/Infectious Diseases Tutorials: bit.ly/ProfDave...
Pharmacology Tutorials: bit.ly/ProfDave...
History of Drugs Videos: bit.ly/ProfDave...
Immunology Tutorials: bit.ly/ProfDave...
EMAIL► ProfessorDaveExplains@gmail.com
PATREON► / professordaveexplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: amzn.to/2HtNpVH
Bookshop: bit.ly/39cKADM
Barnes and Noble: bit.ly/3pUjmrn
Book Depository: bit.ly/3aOVDlT

Опубликовано:

5 окт 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 164

@lijack3425 5 лет назад

More understandable and efficient than reading 20 pages of my textbook :)

@sreemohansharma5954 3 года назад

Sadly term exams gonna ask qn frm txtbook

@anaghasunilkumar4906 3 года назад

Plese share the notes on neurotransmission

@TheNutCollector 2 года назад

@@sreemohansharma5954 You're right about that. I wish we were tested on understanding, not what we can regurgitate from a textbook.

@spidey285 2 года назад

That's what it's all about!

@spidey285 2 года назад

@Sreemohan Sharma well at least now you can go through the material twice as fast (at least) and it'll be much easier to remember the key points and maybe even details! Just as long as you don't make excuses of course 😉

@toekneesee 4 года назад

This is such a great video; explains everything so well, and leaves no leaps of faith! Love how you included how "chemistry happens in picoseconds". Thanks Dave!

@maimahdi7373 3 года назад

Yeah, I loved that too, cuz I was wondering about it, like there’s so much going on in our neurons and signals travel all these distances like. I AM WOWED

@ReiverBlue1971 2 года назад

I love the fact that your vids are a good length at just under 20 minutes (so can keep your attention and focus) but feel like they're about 2 minutes long! Awesome stuff ;D

@bradsillasen1972 3 года назад

I've been watching and reading a lot about this topic but nothing compares to your presentations. The sophisticated graphics alone must take countless hours to create, let alone all the research you must be doing for all your material. Pretty mind-boggling in and of itself! Thanks for the hard work. I'll be signing up and donating on Patreon in the near future.

@lucifershome 17 дней назад

my professor doesn't include anything visual and these really help me retain info. professor dave being the GOAT as usual, thanks dude.

@bronwyngroves9781 3 года назад

You are a life saver for a first year speech pathology and audiology student! these videos and the sound wave explanations have saved me!! thank you!!!

@joanneyazigi8977 4 года назад

Thanks Dave! Honestly this saved me. I have a practical on Monday and we are required to know pretty much everything you explained on action potential. This is great. THANK YOU!

@blerine3 3 года назад

I want to add another comment, THIS IS SUCH A GREAT VIDEO!!! I understand the concepts different receptors but most times, I cannot picture the connection and how it happens (how it jumps from one type of receptor to the next). THANK YOU SO MUCH

@monalizacastillo7023 3 года назад

This covers all of my questions. Perfect! I didn’t have to sit in class for hours.

@soulboken4670 2 года назад

Got a physiology exam in 2 days . 0 study done , watching a few vids of this guy can put me in a position where I can pass , shoutout to Professor Dave!!

@studymateanushka8679 Год назад

My biopsychology teacher took 1 week to clear this topic and you finished it in 20 minutes amazing 🤩😍

@Luu_033 2 года назад

Am having an exam tomorrow and this video just saved me....Thanks professor Dave❤

@Demothones 5 лет назад

I literally just started learning this stuff this week. Great timing.

@LivS-x4g 9 месяцев назад

This is the most helpful videoseries i've come across for understanding biopsychology. Thanks a lot!

@fehdivina4282 Год назад

Very explicit and simple to understand. Thank you professor Dave.

@blerine3 3 года назад

Professor Dave!! Thanks so much!! your videos and explanations answer even the questions i can't articulate. And, you have great and memorable analogies which makes it a lot easier to understand and to keep up!!!

@jillli245 3 года назад

Thank you so so much sir. I wish my professor could explain as clear as you did here. I've watched a lot of your videos before and they all helped me a lot.

@Arjun-ho8tl 3 года назад

Thank you sir,I was searching this topic for 12 hrs and I could not arrive at the right place ,untill I clicked this video.your work is Very understandable and useful.Really helped me!🔥🙏

@mesibra2976 5 лет назад

I really like your videos even though I can’t understand everything bcz I’m not a native English speaker which makes it hard for me to get everything clearly .. but your videos still so helpful . I appreciate your efforts , thank you so much .

@kiruthikabalasubramani8874 4 года назад

Turn on ur captions too :)

@sivachidambaram279 4 года назад

@@kiruthikabalasubramani8874 hi

@rishasarkar4657 3 года назад

Thank you so much, Professor Dave.

@charmmorningstar7530 Год назад

omg of all videos, this is the most informative and easy to understand. i have weekly A&P Exam and this is our topic. Thank you so much!!!❤❤❤

@gaoxoxo 4 года назад

I am reading this in my biopsychology textbook right now, and I didn’t understand ANY of it until I watched this video.

@humanhiveanomaly 4 года назад

Came here from professor Dave's post. Good vid and more so interesting to an EE. "Oh electrochemistry, what will you come up with next..."

@dianaprincessansah2524 10 месяцев назад

great piece of work, very detailed explanation and easier to understand, thanks alot Dr.

@anukamboj9715 2 года назад

This is incredible. Makes it so easy to understand everything. You are magical.

@deborahr9188 4 года назад

Prof. Dave, I want to thank you for your excellent work and the quality of your videos, which has helped many students who are currently in remote education. However, I believe that it is not offensive that I point out a flaw in the content: the sodium-potassium pump does not only turn on at the end of the action potential, but has intermittent activity and is more active in repolarization, as sodium is stimulating for its functioning ; refractory periods also do not occur after the end of repolarization, but at the moment that repolarization begins, since the absolute refractory is caused by the return of the sodium channels to the resting shape, and the relative refractory is due to the membrane's hypernegativity , and therefore would need an additional voltage to cause premature potential and action. Despite this small point.. it"s a very great job!!

@raihanahnabillafirstyrahma7986 2 года назад

Thank you so much! This genuinely saved my life. Wishing all the good things to come in your way!

@NostressAdi 3 года назад

Thank you! This finally makes sense.

@luizatosi8323 2 года назад

Best explanation I've seen so far. Thank you 🙌

@ahmedehab8766 4 года назад

Thanks a lot, Dr. Dave. You are a great science HERO.

@yusuphabah4759 11 месяцев назад

This man here deserves some novel prize

@josephhubbard4332 4 года назад

I'm not sure voltage-gated potassium channels opening at the depolarization threshold is accurate. It would have to move against both electrical potential and concentration gradients to make the intracellular potential more positive and literature seems to suggest that it is either calcium or more sodium gates

@nooksirimar682 4 года назад

Life saver !!! The explainations are so clear. Thanks so much for making this fab video

@heltiswelt Год назад

Incredibly helpful, thank you proff.

@momnatabassam-0244 7 месяцев назад

It was really helpful. For the first time neuro was easy for me to study.

@timothyvanpelt_cyclist 3 года назад

Content of tremendous value, you often fill in the gaps of concepts I'm trying to understand. I think one point could be made more clear in this video. Based on most other sources I have, voltage-gated sodium channels only start opening quickly at around -55mV (threshold value) and voltage-gated potassium channels at around +30mV. But, for example in the figure at 10:50, you show and say the potassium channels open at -55mV. I'm trying to get this clear for myself, so maybe this is of help! I'd also like to suggest a video about saltatory condunction in detail! :D

@ubimumu 2 года назад

On God no Cap you right

@TillenOchieng-c5d 8 месяцев назад

superb illustration

@AnzzCheatedOnMarkWithHaechan 3 года назад

Finally undetood how action potential happen Thank you so much ❤️

@The_Broken_Smile Год назад

I'm really thankful.

@dhandapanibalasubramanian1813 2 года назад

Nice understandable explanations. Thanks

@toothextractionmadeeasy214 2 года назад

It happens in milliseconds millions of times in every activity we do. And he took 15 minutes to explain its summary. Only one word. Great teacher ❤️ And subhan Allah

@AyseY Год назад

great teacher is 2 words but i agree 😭😭😭

@ranahisham5850 2 года назад

Thankyouuuuu u ve been so helpful for me since highschool ❤️❤️❤️❤️❤️

@santicruz4012 4 года назад

I was drinking water when 7:46 suddenly appeared lol Another great video just when I needed it the most, thanks proffesor!

@qball2929 4 года назад

Liked this video after the intro played. Top notch intro. 7/7

@roanhatleycouper7984 3 года назад

These videos are amazing thank youuuu, helping me pass my exams!

@sritharshanavet5310 3 года назад

This part confused🤯 me a long time....This is the great video I've ever seen...This helped me to overcome my stress over this...again such a great epic❤️love it❣️Thank you🤝Mr.Dave for such a great video and explanation 🤩 really love it🥰

@studentslife2495 4 года назад

Amazing collection amazing work your reall teacher proud to be on RU-vid 😊❤

@shambhaviupadhyay7719 2 года назад

Thankyou so much for making it easy and understandable 🙂

@mariammaher6991 4 года назад

Thank you , you’re a blessing 💚

@fahimrahman3542 5 лет назад

Love from bangladesh🇧🇩

@ashcam1791 Год назад

Your videos are study miracles! Thank you Thank you Thank you!!!!!!!!!!!!!

@aclearlight 3 года назад

Great content! It might be worth updating at some point to reflect emerging sense that cimpressional/acoustic waves in lbl and cytoskeleton are also playing a role.

@johnmiguelsadiasa7510 3 года назад

thank you professor Dave!

@thejaaaa 4 года назад

Lovin the new haircut!

@rileyrich4090 3 года назад

Great explanation, I almost can relate to everything you said, lol so much information. Good thing that’s what our brain is for. To hold information. Great job from the U.S.

@MaNnAt_DHimAn 2 года назад

nicely explained thanks

@adityachakraborty3510 4 года назад

This is definitely good stuff exactly the reason why you'll never need a private teacher. XD

@mansirajyaguru9478 2 года назад

Thank you so much for making this video..... I even watched your muscular contraction video it made all my doubts clear...Great video

@myatthuswe6093 3 года назад

amazing explanation thank you

@Hasty_Bahadin 4 года назад

Thank you professor dave

@marthagregory8544 2 года назад

Thank you for sharing

@shikamarunara2827 3 года назад

Thanks 🙃💜

@nursepotassium 3 года назад

I thought that resting state: Na and K gates closed. depolarization phase: Na gates open but K gates still closed repolarization phase: Na gates close and K gates open Then the Na/K pump: brings in back from hyperpolarization to RMP??????? That's how my professor taught it...is it wrong?

@pritipoddar9025 3 года назад

Thank you it's very helpful...And you look like Captain America☺☺

@Samuel-jd4ny 3 месяца назад

thank you sooooo much

@mrkps1986 3 года назад

just love your work

@yakimabarreravaldes7145 3 года назад

Thank you so much!! God bless you .

@Somuntioalt 2 года назад

This is great! I was reading an article about electrophysiology, and I needed a quick refreshment of the matter. This helped a bunch! Super well explained!

@mitkumamo8778 4 года назад

Very nice lecture

@mistykidowo 5 лет назад

Which part of the body that contains the most of neurons?

@godot5643 5 лет назад

The Brain.

@hospitalize827 5 лет назад

duh

@Omprakash-fd2pc 5 лет назад

That stuff is not in you Misty kid

@hungrylion7742 3 года назад

@@hospitalize827 f ers

@juinishat7736 4 года назад

Thank u sir,this is really helpful.

@monadir01 3 года назад

Great video!

@aleshiukas 5 лет назад

What happens between the membranes ? And why certain diseases which thickens membrane makes slower signaling ?

@ProfessorDaveExplains 5 лет назад

Between which membranes? I'm not aware of anything that thickens membranes, I would assume they are of fixed width, as phospholipids are of a fixed length.

@aleshiukas 5 лет назад

@@ProfessorDaveExplains At ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zHJ3h675nNk.html I can see several membranes/coath, where in-between is a thick area. Or this is just a symbolic image and membrane is thru the whole axon in one piece ? As matter membrane thick, there are several demyelination processes regarding neuro diseases (multiple sclerosis, gulian-barre syndrome etc..)

@fernsader9261 5 лет назад

@@aleshiukas the demyelination would denature both the protein and membrane layers along the mylin sheath layers which would rupture the tissue, therefor affecting the action potential of the cells, and reducing cognitive ability. but all of this if one were to state it the way your trying to understand it, is technically DECREASING the density or thickness of the sheath.

@fernsader9261 5 лет назад

I am not aware of increases in neuron growth as neuronal cells are stagnant and do not replicate. If they do it is very rare and through the use of extensive oxygen induction.

@aleshiukas 5 лет назад

@@fernsader9261 Im asking why demyelination slows down messages sent along axon comparing the healthy nerve with a normal myelin coath.

@oluwaseunawotunde4467 3 года назад

great work

@TheHHPodcast 6 месяцев назад

video explanations are a revolution of the education system that used to be based on text for a long time. Couple that with the internet (distribution) and a free market capitalism where the best one gets more spread and voilla: professor dave

@ciscobriano 5 лет назад

So far 3 videos said to watch another video I should have already watched ! 😊 ok so can you start numbering your videos ??? Please I love your show

@ProfessorDaveExplains 5 лет назад

everything is organized nicely into playlists, go to my home page and see.

@soumyasakhadas2980 3 года назад

Thank you sir love from India ❤

@profkelvinlyatuu863 5 лет назад

I've understood Prof Dave welcome Tanzania sir at Mt Kilimanjaro

@jamaicacolumbres7154 3 года назад

Thanks, help a lot!

@ngalalizette9175 3 года назад

Thanks a bunch

@SafaAqeel-r9c 3 года назад

fantastic

@charron115 3 года назад

i would fail my course without this..

@SCIPROlearning 3 года назад

👍 great

@yourfavouritescepticx8969 2 года назад

I come ere when I can’t be asked to read the textbooks although I still end up reading it because I learn best from multiple sources with the same ideologies 😃

@ferielferiel2005 6 месяцев назад

Thanks from Algeria 🇩🇿✅

@brianneira7479 4 года назад

This is amazing!

@mrsatafrika3109 3 года назад

this is amazing

@aryangoswami7512 16 дней назад

How this physical material give rise to consciousness ?

@xCrash57x 2 года назад

May i ask when is the action potential generated? Surely if the neurotransmitter is inhibitory, it wpuldn't stimulate the voltage gated Na+ and K+ channels to open at all - so what would happen if the summation was overall hyperpolarising? Is this vid assuming the NT is excitatory? I would have guessed the action potential would be generated after the ionotropic channel reached threshold value but im unsure.

@thomasruwart1722 4 года назад

A great book to read about what happens when brain things go wrong is "The Man Who Mistook His Wife for a Hat" by Oliver Sacks (hint: there are pdfs floating around that you can find for free).

@lindaurea 2 года назад

🙏God Bless you for this incredible gift

@h4hashir 3 года назад

Where’s the neurotransmitter video? Was it ever made?

@musicloverhayat8402 2 года назад

Thanks💖

@jayita1523 2 года назад

Can anyone tell me what is the need for action potential? Does it help in faster transmission of the nerve impulses?

@organizedbiology 2 года назад

The action potential itself IS the achievement of electrical transmission-that is, once the neuron reaches its threshold potential, sodium ions will rush in, leading to a rapid transmission of an electrochemical impulse down the axon. It certainly helps the speed of transmission-as does the myelination of those axons, which insulated the signal and makes it go faster, similar to wires in our homes.

@gilnarrahmoun7194 3 года назад

00:25 the signals don't go from hands to spinal cord and then to the brain?

@victormaxwellpeters9771 3 года назад

What if ions come under the influence of gravity?? Potassium ions being heavier than sodium will fall down through inner membrain so the concentration gradient might change with In the inner membrane itself. Can you kindly clear my doubt??

@ProfessorDaveExplains 3 года назад

We are talking about an amount of mass that is totally negligible. Gravity does not dictate events on the molecular level.